xref: /base/inputmethod/imf/services/src/freeze_manager.cpp

/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "freeze_manager.h"

#include "ability_manager_client.h"
#include "global.h"
#include "res_sched_client.h"
#include "res_type.h"
#include "system_ability_definition.h"

namespace OHOS {
namespace MiscServices {
const std::string INPUT_METHOD_SERVICE_SA_NAME = "inputmethod_service";
constexpr const char *STOP_TASK_NAME = "ReportStop";
constexpr std::int32_t DELAY_TIME = 3000L;
std::shared_ptr<AppExecFwk::EventHandler> FreezeManager::eventHandler_ = nullptr;
bool FreezeManager::IsIpcNeeded(RequestType type)
{
    // If ime is in use, no need to request hide.
    std::lock_guard<std::mutex> lock(mutex_);
    return !(type == RequestType::REQUEST_HIDE && !isImeInUse_);
}

void FreezeManager::BeforeIpc(RequestType type)
{
    {
        std::lock_guard<std::mutex> lock(mutex_);
        if (type == RequestType::START_INPUT || type == RequestType::REQUEST_SHOW) {
            isImeInUse_ = true;
        }
        if (!isFrozen_) {
            IMSA_HILOGD("not frozen already.");
            return;
        }
        isFrozen_ = false;
    }
    ControlIme(false);
}

void FreezeManager::AfterIpc(RequestType type, bool isSuccess)
{
    bool shouldFreeze = false;
    {
        std::lock_guard<std::mutex> lock(mutex_);
        if (type == RequestType::START_INPUT || type == RequestType::REQUEST_SHOW) {
            isImeInUse_ = isSuccess;
        }
        if (type == RequestType::REQUEST_HIDE && isImeInUse_) {
            isImeInUse_ = !isSuccess;
        }
        if (type == RequestType::STOP_INPUT) {
            isImeInUse_ = false;
        }
        if (isFrozen_ == !isImeInUse_) {
            IMSA_HILOGD("frozen state already: %{public}d.", isFrozen_);
            return;
        }
        isFrozen_ = !isImeInUse_;
        shouldFreeze = isFrozen_;
    }
    ControlIme(shouldFreeze);
}

void FreezeManager::ControlIme(bool shouldFreeze)
{
    if (eventHandler_ == nullptr) {
        IMSA_HILOGW("eventHandler_ is nullptr.");
        ReportRss(shouldFreeze, pid_);
        return;
    }
    if (shouldFreeze) {
        // Delay the FREEZE report by 3s.
        eventHandler_->PostTask(
            [shouldFreeze, pid = pid_]() { ReportRss(shouldFreeze, pid); }, STOP_TASK_NAME, DELAY_TIME);
    } else {
        // Cancel the unexecuted FREEZE task.
        eventHandler_->RemoveTask(STOP_TASK_NAME);
        ReportRss(shouldFreeze, pid_);
    }
}

void FreezeManager::ReportRss(bool shouldFreeze, pid_t pid)
{
    auto type = ResourceSchedule::ResType::RES_TYPE_SA_CONTROL_APP_EVENT;
    auto status = shouldFreeze ? ResourceSchedule::ResType::SaControlAppStatus::SA_STOP_APP
                               : ResourceSchedule::ResType::SaControlAppStatus::SA_START_APP;
    std::unordered_map<std::string, std::string> payload = { { "saId", std::to_string(INPUT_METHOD_SYSTEM_ABILITY_ID) },
        { "saName", INPUT_METHOD_SERVICE_SA_NAME },
        { "extensionType", std::to_string(static_cast<int32_t>(AppExecFwk::ExtensionAbilityType::INPUTMETHOD)) },
        { "pid", std::to_string(pid) } };
    IMSA_HILOGD("report RSS should freeze: %{public}d.", shouldFreeze);
    ResourceSchedule::ResSchedClient::GetInstance().ReportData(type, status, payload);
}

void FreezeManager::SetEventHandler(const std::shared_ptr<AppExecFwk::EventHandler> &eventHandler)
{
    eventHandler_ = eventHandler;
}
} // namespace MiscServices
} // namespace OHOS